Tribord EasyBreath Full Face, Anti-Fog, Hypoallergenic Silicone Facial Lining, Pink, S/M Generally, XS is for childen, S/M is for women and teenagers, ML is for men. L/XL is for men with long face 180 field of vision and shatterproof polycarbonate window for added safety. Full mask for natural breathing through the nose and/or mouth This iEasyBreath is the original model release date 2015 Exclusive breath ventilation concept prevents fogging.